Add github replacement

replace/github.md

@@ -68,6 +68,16 @@ Sapphire is a young software development company started in 2015 that specialize
   - **License**: [CC BY-SA 4.0 license; MIT](https://gitlab.com/gitlab-org/gitlab-foss/-/blob/master/LICENSE)
 {% endinfobox %}
 
+## Gogs
+
+A self-hosted Git service made with Go and made easy.
+
+{% infobox %}
+  - **Website**: [gogs.io](https://gogs.io/)
+  - **Source code**: [Github](https://github.com/gogs/gogs)
+  - **License**: [MIT](https://github.com/gogs/gogs/blob/master/LICENSE)
+{% endinfobox %}
+
 ---
 
 ## More GitLab instances